it will likely re-enter somewhere in the northern U.S. states, parts of South America, northern China, the Middle east, central Italy, northern Spain, New Zealand, the south of Africa or Tasmania in Australia.

An international team of astronomers have traced this single, high-energy cosmic neutrino to a supermassive black hole at the center of a galaxy nearly 4 billion light-years away. The discovery, announced Thursday and published in Science, marks the first-ever detection of the origin of cosmic neutrinos.